SimpleFreeList Class Reference

Free list for a single class of registers (e.g., integer or floating point). More...

#include <free_list.hh>

Public Member Functions
	SimpleFreeList ()
void	addReg (PhysRegIdPtr reg)
	Add a physical register to the free list. More...
template<class InputIt >
void	addRegs (InputIt first, InputIt last)
	Add physical registers to the free list. More...
PhysRegIdPtr	getReg ()
	Get the next available register from the free list. More...
unsigned	numFreeRegs () const
	Return the number of free registers on the list. More...
bool	hasFreeRegs () const
	True iff there are free registers on the list. More...

Private Attributes
std::queue< PhysRegIdPtr >	freeRegs
	The actual free list. More...

Detailed Description

Free list for a single class of registers (e.g., integer or floating point).

Because the register class is implicitly determined by the rename map instance being accessed, all architectural register index parameters and values in this class are relative (e.g., fp2 is just index 2).

Definition at line 62 of file free_list.hh.

Constructor & Destructor Documentation

SimpleFreeList()

SimpleFreeList::SimpleFreeList ( )

inline

Definition at line 71 of file free_list.hh.

Member Function Documentation

addReg()

void SimpleFreeList::addReg ( PhysRegIdPtr  reg )

inline

Add a physical register to the free list.

Definition at line 74 of file free_list.hh.

References freeRegs, and X86ISA::reg.

Referenced by UnifiedFreeList::addCCReg(), UnifiedFreeList::addFloatReg(), UnifiedFreeList::addIntReg(), UnifiedFreeList::addReg(), UnifiedFreeList::addVecElem(), UnifiedFreeList::addVecPredReg(), and UnifiedFreeList::addVecReg().

addRegs()

template<class InputIt >

void SimpleFreeList::addRegs ( InputIt  first, InputIt  last  )

inline

Add physical registers to the free list.

Definition at line 79 of file free_list.hh.

References X86ISA::reg.

Referenced by UnifiedFreeList::addRegs().

getReg()

PhysRegIdPtr SimpleFreeList::getReg ( )

inline

Get the next available register from the free list.

Definition at line 86 of file free_list.hh.

References freeRegs.

Referenced by UnifiedFreeList::getCCReg(), UnifiedFreeList::getFloatReg(), UnifiedFreeList::getIntReg(), UnifiedFreeList::getVecElem(), UnifiedFreeList::getVecPredReg(), UnifiedFreeList::getVecReg(), and SimpleRenameMap::rename().

hasFreeRegs()

bool SimpleFreeList::hasFreeRegs ( ) const

inline

True iff there are free registers on the list.

Definition at line 98 of file free_list.hh.

References freeRegs.

Referenced by UnifiedFreeList::hasFreeCCRegs(), UnifiedFreeList::hasFreeFloatRegs(), UnifiedFreeList::hasFreeIntRegs(), UnifiedFreeList::hasFreeVecElems(), UnifiedFreeList::hasFreeVecPredRegs(), and UnifiedFreeList::hasFreeVecRegs().

numFreeRegs()

unsigned SimpleFreeList::numFreeRegs ( ) const

inline

Return the number of free registers on the list.

Definition at line 95 of file free_list.hh.

References freeRegs.

Referenced by UnifiedFreeList::numFreeCCRegs(), SimpleRenameMap::numFreeEntries(), UnifiedFreeList::numFreeFloatRegs(), UnifiedFreeList::numFreeIntRegs(), UnifiedFreeList::numFreeVecElems(), UnifiedFreeList::numFreeVecPredRegs(), and UnifiedFreeList::numFreeVecRegs().

Member Data Documentation

freeRegs

std::queue<PhysRegIdPtr> SimpleFreeList::freeRegs

private

The actual free list.

Definition at line 67 of file free_list.hh.

Referenced by addReg(), getReg(), hasFreeRegs(), and numFreeRegs().

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The documentation for this class was generated from the following file:

• cpu/o3/free_list.hh